Pot container and cooking utensil
By creating localized temperature difference zones on the inner surface of the pot and varying the roughness of the outer surface, the problems of uniform heat conduction and wear resistance on the inner and outer surfaces of the pot are solved, resulting in fully boiling food and improved appearance.
Patent Information
- Application Number
- CN202422659806.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The existing inner and outer surfaces of the pot are flat and have uniform heat conduction, which results in insufficient boiling and tumbling of food. In addition, the outer surface is prone to oil stains and food residue, leading to oxidation, discoloration, and poor wear resistance.
A localized temperature difference zone is formed on the inner surface of the pot. By combining the roughness difference between the local functional body and the pot substrate with the wear-resistant coating, a visually differentiated outer surface is created. The temperature difference zone promotes heat convection and enhances wear resistance.
It achieves full boiling and tumbling of ingredients inside the pot, enhancing visual appeal and wear resistance, and extending service life.
Smart Images
Figure CN223929966U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of kitchen appliances, and more specifically to a pot inner pot and a cooking utensil. Background Technology
[0002] Existing cooking appliances such as regular rice cookers, electric stoves, IH rice cookers, and induction cookers are generally equipped with a heatable inner pot. These inner pots are typically composed of single-layer, double-layer, or multi-layer substrates, and sometimes have a coating on their surface. However, regardless of the substrate or coating, the thickness of each layer is basically the same throughout the inner pot. This results in a generally uniform thickness of the inner pot, leading to a smooth inner and outer surface and even heat conduction. Consequently, this results in slow convection flow within the inner pot, causing insufficient boiling and tumbling of the food. To address this issue, an outer layer with multiple spaced zones is laminated to the substrate to create multiple temperature difference zones on the inner surface of the inner pot.
[0003] The outer components are typically made using processes such as sanding or transparent protective varnish to highlight the outer surface of the pot's inner layer, showcasing its structure to consumers. Sanding creates a decorative texture but lacks a protective coating, making the outer surface prone to oxidation and discoloration due to the adhesion of oil and food during actual use. Transparent protective varnish, because it cannot contain wear-resistant materials, has poor abrasion resistance, making it easily worn away during use, exposing the components and substrate. This also leads to oxidation and discoloration when oil and food adhere to the outer surface of the pot's inner layer.
[0004] Therefore, a pot inner liner and cooking utensil are needed to at least partially solve the above problems. Utility Model Content
[0005] The description of this utility model introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.
[0006] To at least partially solve the above problems, this utility model provides a pot inner liner for cooking utensils, the pot inner liner comprising:
[0007] A pot base, the pot base forming a pot body with a receiving cavity;
[0008] At least one partial functional body, said at least one partial functional body being embedded in the pot base, the outer surface of said at least one partial functional body being integrally flat with the outer surface of the pot base; and
[0009] A wear-resistant coating covers the outer surfaces of both the at least one partial functional body and the pot substrate, forming the outer layer of the pot liner.
[0010] Wherein, two adjacent local functional bodies or the adjacent portions of a single local functional body are arranged at least one of the radial, circumferential and height directions of the pot body to form a local temperature difference region on the inner surface of the pot liner.
[0011] Furthermore, the outer surface of the local functional body and the outer surface of the pot base have different roughness, resulting in areas with different gloss levels on the outer surface of the pot liner.
[0012] According to this scheme, the wear-resistant coating fills the small pits and protrusions on the outer surface of the pot substrate and the local functional components. Due to the difference in roughness between the two, after filling with the wear-resistant coating, the outer surface of the pot still has different roughness in the area corresponding to the pot substrate and the area corresponding to the local functional components. The area with low roughness has a smooth surface with high planar reflection and low diffuse reflection, resulting in a glossy surface with high gloss and a brighter visual appearance. The area with high roughness has a slightly rough surface with low planar reflection and high diffuse reflection, resulting in a matte surface with low gloss and a softer visual appearance. Thus, after filling with the wear-resistant coating, the smoothness of the low-roughness area is improved, and the reflectivity of the high-roughness area is improved, thereby creating a greater visual difference between the two areas.
[0013] This solution utilizes the roughness differences of various materials combined with coatings to create visual variations in different areas of the pot's outer surface, achieving a differentiated visual effect. The pot's outer surface displays varying areas of light and dark to highlight specific functional components, showcasing the pot's structure to consumers and enhancing its overall aesthetic appeal and visual appeal, thus improving the consumer experience. The pot is also wear-resistant; the outer wear-resistant coating prevents wear, oxidation, and discoloration of the pot base and functional components, resulting in superior product quality and a longer lifespan.
[0014] Optionally, the hardness of the pot base and the hardness of the local functional body are different, so that different roughnesses are constructed on the outer surfaces of the pot base and the local functional body by sandblasting.
[0015] According to this scheme, by utilizing the hardness difference between the pot base and the local functional parts, different roughness surfaces are constructed on these two components through sandblasting. The method of manufacturing different roughness surfaces is simple and convenient for production.
[0016] Optionally, the outer surface of the pot base has a first roughness Ra1, and the outer surface of the local functional body has a second roughness Ra2, wherein Ra1>Ra2.
[0017] According to this design, the outer surface of the pot's inner layer exhibits lower planar reflection and higher diffuse reflection in the area corresponding to the pot's base, resulting in lower gloss and a softer visual appearance. Conversely, the outer surface of the inner layer exhibits higher planar reflection and lower diffuse reflection in the areas corresponding to specific functional components, resulting in higher gloss and a brighter visual appearance. The brighter areas perceived by consumers highlight these functional components, creating a more pronounced effect.
[0018] Optionally, the difference between the first roughness and the second roughness is ΔRa1 = Ra1 - Ra2, where ΔRa1 > 1 μm. According to this scheme, the pot substrate and the local functional body have significantly different roughnesses, which ensures that after the wear-resistant coating is applied, areas with different roughnesses can still be formed on the outer surface of the pot, ensuring that the pot exhibits different bright and dark areas on its outer surface.
[0019] Optionally, the outer surface of the pot substrate has a first roughness Ra1, where Ra1 is 3μm to 8μm. The outer surface of the local functional body has a second roughness Ra2, where Ra2 is 1μm to 3μm. According to this solution, it can be ensured that regions with different roughnesses can still be formed on the outer surface of the pot after the wear-resistant coating is applied, ensuring that the pot exhibits different light and dark areas on the outer surface.
[0020] Optionally, the outer surface of the pot liner has a first surface region corresponding to the pot substrate and a second surface region corresponding to the local functional body. The first surface region has a third roughness Ra3, and the second surface region has a fourth roughness Ra4. The difference between the third roughness and the fourth roughness is ΔRa2 = Ra3 - Ra4, where ΔRa2 > 1 μm. According to this scheme, the outer surface of the pot liner has a large difference in roughness in different regions, which can ensure that there are differences in planar reflection and diffuse reflection in different regions, thereby ensuring that the pot liner presents different bright and dark areas on its outer surface.
[0021] Optionally, the outer surface of the pot liner has a first surface region corresponding to the pot substrate, the first surface region having a third roughness Ra3, where Ra3 is 2μm to 5μm. The outer surface of the pot liner also has a second surface region corresponding to the local functional body, the second surface region having a fourth roughness Ra4, where Ra4 is 0.1μm to 2.0μm. According to this solution, differences in planar reflection and diffuse reflection at different regions can be ensured, thereby ensuring that the pot liner presents different bright and dark areas on its outer surface.
[0022] Optionally, the thickness t of the wear-resistant coating is 10μm to 40μm. According to this solution, the moderate thickness of the wear-resistant coating ensures that areas with different roughness can still be formed on the outer surface of the pot after the wear-resistant coating is applied, ensuring that the pot exhibits different bright and dark areas on its outer surface.
[0023] The pot base and the partial functional body are made of metal. According to this solution, the metal pot base and the partial functional body can be made to have different surface roughnesses simultaneously through a certain surface treatment process, making production easier and reducing manufacturing costs.
[0024] Optionally, the pot base is a heat conductor, and the local functional body is a heat-concentrating body, a heat-insulating body, or a magnetizing body. Alternatively, the pot base is a magnetic conductor, and the local functional body is a magnetizing body or a magnetic shield. According to this solution, the local functional body can adjust the heat distribution to form the local temperature difference region by changing the heat transfer path or by changing the distribution of the magnetic field. The heat-concentrating body can concentrate the heat of the pot base, the heat-insulating body can block the heat from the heating device, the magnetizing body can concentrate some of the magnetic field lines to generate a large amount of heat, and the magnetic shield can prevent magnetic field lines from passing through part of the pot base to avoid generating heat.
[0025] Optionally, the at least one local functional body includes a plurality of first local functional bodies, which are arranged in a circumferential array along the pot body, and the width of each first local functional body in the circumferential direction gradually increases from the radial direction outward and / or the height direction upward of the pot body.
[0026] According to this solution, multiple local functional bodies, including fan-shaped and similar patterns, can be formed on the inner pot. Compared to other shapes such as rings, circles, and polygons, the local functional bodies with gradually widening patterns have the structural characteristic of being narrower closer to the bottom center of the inner pot and wider further away from the bottom center. This allows the local functional bodies to cover a larger area of the inner pot, at least at the bottom, and provides a larger area for adjusting the heat distribution within the inner pot. Consequently, the coverage area of local temperature difference zones is larger, achieving a large-scale, uneven heating and boiling effect. Furthermore, when the local functional bodies form the inner or outer surface of the inner pot, the appearance of the product can be shaped based on the gradually widening pattern, resulting in a simpler, more aesthetically pleasing overall appearance and a better visual effect.
[0027] Optionally, the at least one local functional body includes an annular or circular second local functional body, the second local functional body being located at the bottom center of the pot body, and the narrow ends of the plurality of first local functional bodies being connected to the second local functional body.
[0028] According to this solution, multiple first partial functional bodies can be positioned based on the second partial functional body, making it easier for the partial functional materials to be formed on the pot body; and the overall appearance of the product is simpler and more beautiful, with better visual effect.
[0029] According to another aspect of this application, a cooking appliance is provided, the cooking appliance comprising the inner pot according to any of the preceding aspects.
[0030] According to this design, the inner pot features different light and dark areas on its outer surface to highlight specific functional components. This showcases the inner pot's structure to consumers, resulting in a more aesthetically pleasing overall product with enhanced visual appeal and a better consumer experience. The inner pot is also wear-resistant, with an outer wear-resistant coating preventing wear, oxidation, and discoloration of the pot body and functional components, leading to improved product quality and a longer lifespan. Attached Figure Description
[0031] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention.
[0032] In the attached image:
[0033] Figure 1 This is a cross-sectional view of a pot liner according to a preferred embodiment of this application;
[0034] Figure 2 for Figure 1 A bottom view of the inner pot;
[0035] Figure 3a for Figure 1 A bottom view of a modified example of the inner pot;
[0036] Figure 3b for Figure 1 A bottom view of another variation of the inner pot;
[0037] Figure 4 for Figure 1 A three-dimensional diagram of a local functional unit;
[0038] Figure 5 for Figure 1 A schematic diagram of the light reflection effect on the first surface area of the inner pot;
[0039] Figure 6 for Figure 1 A schematic diagram of the light reflection effect on the second surface area of the inner pot.
[0040] Explanation of reference numerals in the attached figures:
[0041] 1 pot inner pot
[0042] 2. Pot body
[0043] 3 Bottom of the pot body
[0044] 4. Side of the pot body
[0045] 10 pot base
[0046] 20 Local functional units
[0047] 21 First Local Functional Entity
[0048] 22 Second Local Functional Components
[0049] 23 Center Through Hole
[0050] 30 wear-resistant coating
[0051] A First Surface Region
[0052] B Second Surface Region Detailed Implementation
[0053] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.
[0054] To fully understand this invention, a detailed description will be provided below. Obviously, the implementation of this invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this invention are described in detail below; however, other embodiments may also be possible besides these detailed descriptions.
[0055] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.
[0056] The ordinal numbers such as "first" and "second" used in this invention are merely identifiers and have no other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."
[0057] It should be noted that the terms “up,” “down,” “front,” “back,” “left,” “right,” “inner,” “outer,” and similar expressions used in this article are for illustrative purposes only and are not intended to be restrictive.
[0058] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.
[0059] This utility model provides a cooking appliance, which includes a pot and a heating device for heating the pot. The cooking appliance can be, for example, a regular rice cooker, an electric stove equipped with a pot, a pressure cooker, or other electrically heated cooking appliances, in which case the heating device is an electric heating plate or similar device. Alternatively, the cooking appliance can be, for example, an IH rice cooker, an induction cooker equipped with a pot, an IH pressure cooker, or other electromagnetically heated cooking appliances, in which case the pot includes a magnetically conductive material, and the heating device is an electromagnetic heating coil or similar device. In addition to cooking rice, the cooking appliance can also have various other functions such as cooking porridge.
[0060] For cooking appliances like rice cookers, the cooking vessel consists of a pot body and a lid. The pot body has a cylindrical inner pot storage compartment. The inner pot can be fixed in the inner pot storage compartment, or it can be freely placed into or removed from the inner pot storage compartment for easy cleaning. The inner pot is usually made of metal and has a circular opening on its upper surface for holding the food to be heated, such as rice or soup. The pot body includes a heating device for heating the inner pot, such as an induction coil or heating plate.
[0061] The lid has a shape that substantially corresponds to the pot body. The lid is cladably mounted on the pot body; specifically, it is pivotally connected to the pot body via a pivot axis and can freely pivot between a closed and open position relative to the pot body about the pivot axis, facilitating the closing and opening of the pot body. When the lid is closed on the pot body, it covers the inner pot, forming a cooking space between them. The lid typically also has a sealing ring, which can be made of, for example, rubber, and is positioned between the lid and the inner pot to seal the cooking space when the lid is closed.
[0062] For cooking appliances such as electric stoves or induction cookers, the inner pot is independent of the electric stove or induction cooker, and the inner pot can be placed on the upper surface of the electric stove or induction cooker during use.
[0063] like Figures 1 to 6As shown, this application provides a pot liner 1 with better heat convection. The pot liner 1 mainly includes at least one pot base 10 and at least one local functional body 20. The at least one pot base 10 constitutes a pot body 2 with a receiving cavity. The at least one local functional body 20 is connected to the at least one pot base 10 from the outside of the at least one pot base 10. When there is one pot base 10, the at least one local functional body 20 is connected to the pot base 10 from the outer surface of the pot base 10; when there are two or more pot bases 10, the at least one local functional body 20 is connected to the outermost pot base 10 from the outer surface of the outermost pot base 10. The pot liner 1 of this solution has a multi-layered pot body such as a double-layered pot body or a triple-layered pot body, and the local functional body 20 is located on the outside of the pot body 2.
[0064] The local functional element 20 is used to adjust the heat distribution within the inner pot 1. The material of the pot base 10 is different from that of the local functional element 20, resulting in differences between the pot base 10 and the local functional element 20 in, for example, thermal conductivity or magnetic permeability. To improve heat convection within the inner pot 1 during cooking, such as... Figure 2 , Figure 3a and Figure 3b As shown, adjacent local functional bodies 20 or adjacent portions of a single local functional body 20 are spaced apart in at least one of the radial, circumferential, and height directions of the pot body 2 to form a local temperature difference region on the inner surface of the pot liner 1. The pot body 2 includes a connected pot body bottom 3 and pot body side 4. At least the pot body bottom 3 is configured in an arc or spherical shape, thereby the bottom of the pot base 10 is configured in an arc or spherical shape, and the local functional bodies 20 are at least provided at the pot body bottom 3. Figure 1 The diagram schematically shows an arc-shaped pot bottom 3 and a partially straight-walled pot side 4. In one example (not shown), the pot bottom 3 and pot side 4 form a spherical shape. In another example (not shown), the pot bottom 3 and pot side 4 form a straight-walled shape.
[0065] When the local functional body 20 is disposed at the bottom of the pot body 2, for the straight-walled bottom of the pot body 3, the local functional body 20 is arranged at least once in the radial and circumferential directions of the pot body 2; for the arc-shaped / spherical bottom of the pot body 3, the local functional body 20 is arranged at intervals in the circumferential direction, or in the radial and height directions, or in the radial, circumferential and height directions of the pot body 2.
[0066] When the local functional body 20 is disposed on the side of the pot body 2, for the straight-walled pot body side 4, the local functional body 20 is arranged at least once in the circumferential and height directions of the pot body 2; for the arc-shaped / spherical pot body side 4, the local functional body 20 is arranged at intervals in the circumferential, radial and height directions, or radial, circumferential and height directions of the pot body 2.
[0067] With this arrangement, the inner surface of the pot liner 1 can have a first temperature zone corresponding to the local functional body 20 and a second temperature zone corresponding to the portion of the pot base 10 at the intervals between the local functional bodies 20. When the pot liner 1 is heated, due to the adjustment of heat distribution by the local functional bodies 20, there is a significant temperature difference between the first and second temperature zones of the pot liner 1, thus forming a local temperature difference region between the two regions, which can generate a significant temperature gradient. Utilizing the temperature gradient, the heat convection inside the pot becomes faster and more intense, resulting in more thorough boiling and churning of the liquid and food inside the pot, more uniform heating of the food, and better consistency in the cooking effect. In addition, when there are local temperature difference regions at multiple locations on the inner surface of the pot liner 1, the food grains such as rice in contact with the inner surface of the pot liner 1 will undergo stress deformation and viscosity changes due to expansion caused by the temperature difference, giving the inner surface of the pot liner 1 non-stick properties, achieving a non-stick coating.
[0068] The local functional body 20 can be a heat-concentrating body, a heat-insulating body, a magnetizing body, or a magnetic shield. When the local functional body 20 is a heat-concentrating body or a heat-insulating body, it can adjust the heat distribution to form a local temperature difference region by changing the heat transfer path. The heat-concentrating body can concentrate the heat of the pot base 10, while the heat-insulating body can block the heat from the pot base 10. When the local functional body 20 is a magnetizing body or a magnetic shield, it can adjust the heat distribution to form a local temperature difference region by changing the magnetic field distribution. The magnetizing body can concentrate some of the magnetic field lines to generate a large amount of heat, while the magnetic shield can prevent magnetic field lines from passing through part of the pot base to avoid generating heat.
[0069] The pot base 10 is a heat conductor and / or a magnetic conductor. When there is only one pot base 10, one example is that the pot base 10 is a magnetic conductor, and the local functional body 20 is a magnetizing body or a magnetic shield. The pot base 10 can generate heat through electromagnetic heating, and the local functional body 20 can generate a large amount of heat or not generate heat, suitable for electromagnetic heating cooking appliances. Another example is that the pot base 10 is a heat conductor, and the local functional body 20 is a heat-concentrating body or a heat-insulating body. The pot base 10 can absorb heat from the heating device, and the local functional body 20 can concentrate heat or block heat, suitable for electric heating cooking appliances. In this other example, alternatively, the local functional body 20 is a magnetizing body to generate a large amount of heat through electromagnetic heating.
[0070] In the above examples, where the local functional body 20 is a heat-concentrating body or a magnetic concentrator, the inner surface temperature of the region corresponding to the local functional body 20 in the pot liner 1 is relatively high; more specifically, the first temperature region is a high-temperature region, and the second temperature region is a low-temperature region. In the examples where the local functional body 20 is a heat-insulating body or a magnetic shielding body, the inner surface temperature of the region corresponding to the local functional body 20 in the pot liner 1 is relatively high; more specifically, the first temperature region is a low-temperature region, and the second temperature region is a high-temperature region.
[0071] In some embodiments, the pot base 10 is made of a thermally conductive metal material; or a magnetically conductive metal material. Alternatively, the pot base 10 is made of a non-metallic material. The pot base 10, which forms the inner surface of the pot body 2, can be made of a non-stick metal material to give the inner surface of the inner pot 1 a non-stick function, achieving coating-free non-stick; the pot base 10 is used to generate heat or absorb heat from the heating device through electromagnetic heating; and the inner pot 1 has better heat storage and heat preservation performance.
[0072] When the local functional body 20 is a magnet, the material of the magnet can be a known material such as rare earth material or amorphous material. When the local functional body 20 is a magnetic shield, the material of the magnetic shield can be a known material such as aluminum powder or ceramic. When the local functional body 20 is a heat collector, the material of the heat collector can be a known material such as aluminum, copper, carbon, or graphite. When the local functional body 20 is a heat insulator, the material of the heat insulator can be a known material such as PTFE (polytetrafluoroethylene), PFA (polyfluoroalkoxy), or ceramic.
[0073] The shape of the local functional elements 20 can be arranged as needed: one example is that the local functional elements 20 are arranged in a ring, specifically in a ring along the circumference of the pot body 2, and in a concentric ring array along the radial direction of the pot body 2 and / or in rows along the height direction of the inner pot 1. Another example is that the local functional elements 20 are arranged in a spiral shape, specifically spiraling outwards radially from the center of the bottom of the pot body 2 and spiraling upwards gradually along the height direction.
[0074] like Figures 2 to 4 As shown, the local functional body 20 forms multiple first local functional bodies 21, which are arranged in a circumferential array along the pot body 2. The multiple first local functional bodies 21 enable the pot liner 1 to form multiple local temperature difference regions arranged in the circumferential direction. The shape of the first local functional body 21 can be circular, elliptical, etc. Figure 4The shape of the local functional body 20 is shown as a fan-shaped or similar pattern. Specifically, the width of each first local functional body 21 in the circumferential direction gradually increases from the radial direction outward and / or the height direction upward of the pot body 2 to form a gradually widening pattern. Compared with other shapes such as rings, circles, and polygons, the gradually widening local functional body 20 has the structural characteristic of being narrower closer to the bottom center of the pot 1 and wider further away from the bottom center of the pot 1. This allows the local functional body 20 to cover more of the pot 1 area at least at the bottom, and the local functional body 20 has a larger adjustment area for the heat distribution of the pot 1, thus covering a larger area of local temperature difference regions and achieving a large-scale non-uniform heating and boiling effect. Furthermore, when the local functional body 20 forms the inner or outer surface of the pot body 2, the appearance of the product can be shaped based on the gradually widening pattern, making the overall appearance simpler, more beautiful, and with a better visual effect.
[0075] like Figure 2 and Figure 3a As shown, at least one local functional body 20 also includes a second local functional body 22. Figure 2 The second local functional body 22 is shown to be circular in shape. Figure 3a The second partial functional body 22 is shown to have a central through hole 23, thus forming an annular shape. The second partial functional body 22 is located at the bottom center of the pot body 2, and the narrow ends of multiple first partial functional bodies 21 are connected to the second partial functional body 22. The second partial functional body 22 connects the multiple first partial functional bodies 21 to form an integral component, facilitating its overall integration into the pot base 10. The multiple first partial functional bodies 21 can be positioned based on the second partial functional body 22, making it easy for the partial functional bodies 20 to be formed on the pot body 2; and the overall appearance of the product is simpler and more aesthetically pleasing, with a better visual effect.
[0076] The partial functional body 20 is embedded within the pot base 10. For example, one embodiment involves pressing it into the pot base 10 from its outer surface using a pressing method. Before lamination, the partial functional body 20 is a flat plate. Applying force to its lower surface causes deformation during the pressing process, ultimately embedding it into the pot base 10. Another embodiment involves the pot base 10 having a perforated portion, within which the partial functional body 20 is integrated. The perforated portion is constructed as a through-hole extending through the thickness or a recessed portion from the outer surface of the pot base 10. This ensures the partial functional body 20 is securely and reliably connected to the pot base 10, preventing it from easily detaching.
[0077] See Figure 5 and Figure 6The inner pot 1 also includes a wear-resistant coating 30, which is a protective coating with wear-resistant properties. The wear-resistant coating 30 covers the outer surfaces of at least one local functional body 20 and the pot substrate 10 and forms the outer layer of the inner pot 1. The outer surface of the wear-resistant coating 30 is the outer surface of the inner pot 1. By applying a coating containing wear-resistant substances to the outer surfaces of both the local functional body 20 and the pot substrate 10 by means such as spraying, the inner pot 1 has wear-resistant properties. The outer wear-resistant coating 30 can prevent the pot substrate 10 and the local functional body 20 from being worn, oxidized, and discolored, resulting in better product quality and a longer service life.
[0078] The outer surface of the pot body 2 and the outer surface of the partial functional body 20 are flat overall. The partial functional body 20 is completely embedded in the interior of the pot body 2, making the structure more robust and reliable, and the overall appearance of the product is simpler and more beautiful, with a better visual effect.
[0079] In order to highlight the local functional body 20 from the outer surface of the pot liner 1, the outer surface of the local functional body 20 and the outer surface of the pot base 10 have different roughness, so that the outer surface of the pot liner 1 forms areas with different gloss. Figure 5 The diagram schematically illustrates that the outer surface of the pot base 10 has small depressions and protrusions due to its roughness. Figure 6 The diagram schematically illustrates the small depressions and protrusions on the outer surface of the local functional body 20 due to its roughness. Because the outer surfaces of the pot substrate 10 and the local functional body 20 have different roughnesses, during manufacturing, a wear-resistant coating is used to fill these small depressions and protrusions on the outer surfaces of the pot substrate 10 and the local functional body 20. Due to the difference in roughness, even after the wear-resistant coating is applied, the outer surface of the pot liner 1 still exhibits different roughness in the region corresponding to the pot substrate 10 and the region corresponding to the local functional body 20.
[0080] like Figure 5 As shown, areas with high roughness have a slightly rougher surface with lower planar reflection and higher diffuse reflection, resulting in a matte surface. The gloss level is low as perceived by the eye, leading to a softer visual experience. For example... Figure 6 As shown, areas with low roughness have a smooth surface with high planar reflection and low diffuse reflection, resulting in a glossy surface with high visual gloss and a brighter appearance. Therefore, after filling with a wear-resistant coating, the smoothness of the low-roughness areas is improved, while the reflectivity of the high-roughness areas is enhanced, thus creating a greater visual difference between the two areas.
[0081] This solution utilizes the roughness differences of different materials combined with coatings to create visual differences in different areas of the outer surface of the pot liner 1, thus achieving visual differentiation. By presenting different light and dark areas on the outer surface of the pot liner 1, the local functional components 20 are highlighted, showcasing the structure of the pot liner 1 to consumers. Furthermore, the overall appearance of the product is more aesthetically pleasing, resulting in a better visual effect and enhancing the consumer experience.
[0082] The hardness of the pot base 10 and the local functional body 20 are different, so different roughnesses can be constructed on the outer surfaces of the pot base 10 and the local functional body 20 by sandblasting. By utilizing the hardness difference between the pot base 10 and the local functional body 20, different roughness surfaces can be constructed on these two components by sandblasting. The method of manufacturing different roughnesses is simple and convenient for production.
[0083] For example, the hardness of the pot base 10 is less than the hardness of the local functional body 20. Therefore, for example, through sandblasting, the roughness of the outer surface of the pot base 10 is greater than the roughness of the outer surface of the local functional body 20. Specifically, the outer surface of the pot base 10 has a first roughness Ra1, and the outer surface of the local functional body 20 has a second roughness Ra2, where Ra1 > Ra2. In this example, the outer surface of the inner pot 1 can have lower planar reflection and higher diffuse reflection in the region corresponding to the pot base 10, resulting in lower gloss and a softer visual appearance. The outer surface of the inner pot 1 can have higher planar reflection and lower diffuse reflection in the region corresponding to the local functional body 20, resulting in higher gloss and a brighter visual appearance. The brighter area observed by the consumer highlights the local functional body 20, making the highlighting effect more pronounced.
[0084] Both the pot base 10 and the functional component 20 can be made of metal. Metal pot base 10 and functional component 20 allow for different surface roughnesses to be achieved through a single surface treatment process, making manufacturing easier and less costly. For example, the pot base 10 could be made of aluminum, and the functional component 20 of stainless steel. Aluminum is less hard than stainless steel. After sandblasting, the surface roughness of aluminum is greater than that of stainless steel.
[0085] The difference between the first roughness and the second roughness is ΔRa1 = Ra1 - Ra2, where ΔRa1 > 1 μm. For example, ΔRa1 can be a suitable value such as 1.5 μm, 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm, or 5 μm. Optionally, the first roughness Ra1 can be 3 μm to 8 μm, for example, Ra1 can be a suitable value such as 3 μm, 3.5 μm, 4 μm, 4.5 μm, 5 μm, 6 μm, 7 μm, or 8 μm. The second roughness Ra2 can be 1 μm to 3 μm, for example, Ra2 can be a suitable value such as 1 μm, 1.5 μm, 2 μm, 2.5 μm, or 3 μm. The pot substrate 10 and the local functional body 20 have significantly different roughnesses, which ensures that after the wear-resistant coating is applied, areas with different roughnesses can still be formed on the outer surface of the pot liner 1, ensuring that the pot liner 1 presents different bright and dark areas on its outer surface.
[0086] The outer surface of the inner pot 1 has a first surface region corresponding to the pot base 10 and a second surface region corresponding to the local functional body 20. The first surface region has a third roughness Ra3, and the second surface region has a fourth roughness Ra4. The difference between the third roughness and the fourth roughness is ΔRa2 = Ra3 - Ra4, where ΔRa2 > 1 μm. For example, ΔRa1 can be a suitable value such as 1.2 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, or 3.5 μm. Optionally, the third roughness Ra3 can be 2 μm to 5 μm, for example, Ra3 can be a suitable value such as 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm, or 5 μm. The fourth roughness Ra4 can be 0.1 μm to 2.0 μm, for example, Ra4 can be a suitable value such as 0.1 μm, 0.2 μm, 0.5 μm, 1 μm, 1.5 μm, or 2 μm. The outer surface of the pot liner 1 has a large difference in roughness in different areas, which ensures that there are differences in planar reflection and diffuse reflection in different areas, thereby ensuring that the outer surface of the pot liner 1 presents different bright and dark areas.
[0087] The proportion of wear-resistant material added to the wear-resistant coating is 5% to 30%, preferably 10% to 20%, and the particle size of the wear-resistant material is 500 mesh to 1500 mesh, preferably 800 to 1200 mesh. The thickness t of the wear-resistant coating 30 can be 10 μm to 40 μm, for example, t can be 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 40 μm, etc. t is preferably 20 μm to 30 μm. The moderate thickness of the wear-resistant coating 30 ensures that after the wear-resistant coating is applied, areas with different roughness can still be formed on the outer surface of the pot liner 1, ensuring that the pot liner 1 presents different bright and dark areas on its outer surface.
[0088] The manufacturing process of the inner pot 1 includes the following steps:
[0089] Pot base 10 and local functional body 20 → Annealing → Undercoating → Sandblasting → Coating → Sintering.
[0090] For example, the pot base 10 is made of aluminum, and the partial functional body 20 is made of stainless steel. First, both the pot base 10 and the partial functional body 20 are simultaneously annealed at a temperature of 450℃ to 550℃. After annealing, the hardness of the aluminum pot base 10 is 20 to 25 HV. The hardness of stainless steel is typically 150 to 250 HV. The partial functional body 20 does not reach the annealing temperature of its material, and its hardness does not change significantly. Therefore, after annealing, the hardness of the pot base 10 is significantly less than the hardness of the partial functional body 20.
[0091] Secondly, the stainless steel partial functional body 20 is attached to the bottom of the pot base 10. The partial functional body 20 can be fully embedded in the pot base 10.
[0092] Next, the outer surfaces of both the pot base 10 and the local functional body 20 are sandblasted. Since the hardness of the pot base 10 and the local functional body 20 is different, the surface roughness after sandblasting will also be different. The local functional body 20 has high hardness and its outer surface roughness is low after sandblasting, while the pot base 10 has low hardness and its outer surface roughness is high after sandblasting.
[0093] Then, a coating is sprayed onto the outer surfaces of both the pot substrate 10 and the local functional body 20. The coating is a high-wear-resistant coating with added wear-resistant substances, and the color can be semi-transparent or opaque, such as black, gray, or copper crystal color. The wear-resistant substance particles fill the rough surface; on surfaces with low roughness, the filling achieves a smooth effect, while on surfaces with high roughness, the filling still results in a matte surface.
[0094] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.
[0095] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are only for illustrative purposes. This utility model is not limited to the above embodiments. Many variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.
Claims
1. A pot inner liner for use in cooking utensil, characterized in that, The inner pot includes: A pot base, the pot base forming a pot body with a receiving cavity; At least one partial functional body, said at least one partial functional body being embedded in the pot base, the outer surface of said at least one partial functional body being integrally flat with the outer surface of the pot base; and A wear-resistant coating covers the outer surfaces of both the at least one partial functional body and the pot substrate, forming the outer layer of the pot liner. Wherein, two adjacent local functional bodies or the adjacent portions of a single local functional body are arranged at least one of the radial, circumferential and height directions of the pot body to form a local temperature difference region on the inner surface of the pot liner. Furthermore, the outer surface of the local functional body and the outer surface of the pot base have different roughness, resulting in areas with different gloss levels on the outer surface of the pot liner.
2. The inner pot according to claim 1, characterized in that, The hardness of the pot base and the hardness of the local functional body are different, so that different roughnesses are constructed on the outer surfaces of the pot base and the local functional body by sandblasting.
3. The inner pot according to claim 1, characterized in that, The outer surface of the pot base has a first roughness Ra1, and the outer surface of the local functional body has a second roughness Ra2, wherein Ra1>Ra2.
4. The inner pot according to claim 3, characterized in that, The difference between the first roughness and the second roughness is ΔRa1=Ra1-Ra2, where ΔRa1>1μm.
5. The inner pot according to claim 1, characterized in that, The outer surface of the pot base has a first roughness Ra1, where Ra1 is 3 μm to 8 μm; and / or The outer surface of the local functional body has a second roughness Ra2, where Ra2 is 1μm to 3μm.
6. The inner pot according to claim 1, characterized in that, The outer surface of the pot has a first surface region corresponding to the pot base and a second surface region corresponding to the local functional body. The first surface region has a third roughness Ra3, and the second surface region has a fourth roughness Ra4. The difference between the third roughness and the fourth roughness is ΔRa2=Ra3-Ra4, where ΔRa2>1μm.
7. The inner pot according to claim 1, characterized in that, The outer surface of the inner pot has a first surface region corresponding to the pot base, the first surface region having a third roughness Ra3, wherein Ra3 is 2μm to 5μm; and / or The outer surface of the pot has a second surface region corresponding to the local functional body, and the second surface region has a fourth roughness Ra4, wherein Ra4 is 0.1μm to 2.0μm.
8. The inner pot according to claim 1, characterized in that, The thickness t of the wear-resistant coating is 10μm to 40μm; and / or the pot substrate and the local functional body are made of metallic materials.
9. The inner pot according to any one of claims 1 to 8, characterized in that, The wear-resistant coating is formed of a semi-transparent or opaque paint; and / or the wear-resistant coating is black, gray, or copper crystal color.
10. The inner pot according to any one of claims 1 to 8, characterized in that, The pot base is a heat conductor, and the local functional body is a heat-concentrating body, a heat-insulating body, or a magnetizing body; or The pot base is a magnetic conductor, and the local functional body is a magnetizing body or a magnetic shield.
11. The inner pot according to any one of claims 1 to 8, characterized in that, The at least one local functional body includes a plurality of first local functional bodies, which are arranged in a circumferential array along the pot body, and the width of each first local functional body in the circumferential direction gradually increases from the radial direction outward and / or the height direction upward of the pot body.
12. The inner pot according to claim 11, characterized in that, The at least one local functional body includes a ring-shaped or circular second local functional body, which is located at the bottom center of the pot body, and the narrow ends of the plurality of first local functional bodies are all connected to the second local functional body.
13. A cooking utensil, characterized in that, The cooking appliance includes the inner pot according to any one of claims 1 to 12.